Ana Ivanovic blames quarters loss to 'emotionally draining' thrilling win against Serena Williams at Australian Open

Serbia’s Ana Ivanovic, who lost to Canadian teenager Eugenie Bouchard and failed to advance to the semi-finals of the Australian Open, has said that the thrill of beating World No.1 Serena Williams had left her emotionally drained.

Ivanovic said she still believes she's playing the best tennis of her life.

The Serbian couldn’t keep her win momentum going against Bouchard, who won 5-7, 7-5, 6-2 to set up a last-four clash with Li Na.

The former world number one said she was encouraged by her early season resurgence and was eyeing a return to the top 10 after struggling to hit the big time since winning the 2008 French Open.

Ivanovic said she aimed to return to the top 10, Sport24 reports.

She was ranked 14 ahead of the Australian Open.